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A circle is a plane figure contained by one line, which is called the circumference, and is such that all straight lines drawn from a certain point within the figure to the circumference, are equal to one another.
Elements of Geometry: Containing the First Six Books of Euclid, with a ... - Page 19
by John Playfair - 1819 - 333 pages
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## The Harpur Euclid: An Edition of Euclid's Elements

Edward Mann Langley, W. Seys Phillips - 1890 - 538 pages
...enclosed by one or more boundaries. A figure contained by three Straight lines is called a triangle. 15. A circle is a plane figure contained by one line,...within the figure to the circumference are equal. 16. This point is called the centre of the circle, and the straight line drawn from the centre to the...
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## The Elements of Euclid: Viz. the First Six Books, Together with the Eleventh ...

Euclid - Geometry - 1892 - 460 pages
...Book III. deals with the properties of Circles. DEFINITIONS. 1 . A circle is a plane figure bounded by one line, which is called the circumference, and...figure to the circumference are equal to one another: this point is called the centre of the circle. 2. A radius of a circle is a straight line drawn from...
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## Mining: A Journal Devoted to the Interests of Mines and Mining ..., Volume 2

Mines and mineral resources - 1894 - 330 pages
...all its sides equal, and its angles equal. rig. IB. A Circle is a plane figure contained or bounded by one line which is called the circumference, and is such that all straight lines from a certain point within the figure to the circumference are equal to one another. This point is...
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## Colliery Surveying: A Primer Designed for the Use of Students and Colliery ...

Thomas Aloysius O'Donahue - Mine surveying - 1896 - 186 pages
...which has all its sides equal, and its angles equal. A circle is a plane figure contained or bounded by one line, which is called the circumference, and is such that all straight lines from a certain point within the figure to the circumference are equal to one another. This point is...
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## Elementary Manual on Steam and the Steam Engine

Andrew Jamieson - Steam - 1897 - 362 pages
...CIRCLE is a plane figure bounded by one line, which is called the circumference ; and is such, t/tat all straight lines drawn from, a certain point within...figure to the circumference are equal to one another. This point is called tlie centre of the circle. A DIAMETER of a circle is a straight line drawn through...
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## Mathematics: Mechanic's bids and estimates. Mensuration for beginners. Easy ...

Seymour Eaton - 1899 - 362 pages
...the triangle is said to be equilateral. 5. A circle is a plane (flat) figure contained by one line called the circumference, and is such that all straight...within the figure to the circumference are equal. This point is called the center of the circle. 6. The radius of a circle is any straight line drawn...
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## Elementary Physiography: An Introduction to the Study of Nature

John Thornton - Physical geography - 1899 - 460 pages
...from a plane. The intersection of two planes is a straight line. A circle is a plane figure bounded by one line, which is called the circumference, and is such that all straight lines drawn from its centre (radii) to the circumference are equal. A sphere, or globe, is a round body bounded by a...
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## A Text-book of Euclid's Elements for the Use of Schools. Books I.-VI ..., Book 1

Euclid, Henry Sinclair Hall, Frederick Haller Stevens - Euclid's Elements - 1900 - 330 pages
...figure. Two figures are said to be equal in area when they enclose equal portions of a plane surface. 15. A circle is a plane figure contained by one line,...figure to the circumference are equal to one another; this point is called the centre of the circle. 16. A radius of a circle is a straight line drawn from...
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## XX Century Cyclopaedia and Atlas: Biography, History, Art, Science ..., Volume 2

1901 - 530 pages
...before expanding. Circle is a plane figure contained by one Hue, which is tailed the rircumferenrt, and is such that all straight lines drawn from a certain point (the centre) within the figure to the circumference are equal to one another. The properties of the...
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## First Stage Practical Plane and Solid Geometry

G. F. Burn - Geometry - 1903 - 272 pages
...its sides. The periphery is the boundary line of a circle or curved figure. Adjacent means adjoining. A circle is a plane figure contained by one line,...figure to the circumference, are equal to one another. And this point is called the centre of the circle. In Practical Geometry, the circumference of a circle...
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